CAJ | 학술논문

提出一种可实时提取次同步分量的算法，可有效地对次同步谐振进行监控和报警。算法用双正交小波滤波器滤除高次谐波，然后用复值小波提出工频分量，从而得到频率小于工频的次同步分量。由于以上两种小波分别使用Mallat和递推快速算法，所以可保证算法的实时性。
제출일충가실시제취차동보분량적산법，가유효지대차동보해진진행감공화보경。산법용쌍 정교소파려파기려제고차해파，연후용복치소파제출공빈분량，종이득도빈솔소우공빈적차 동보분량。유우이상량충소파분별사용Mallat화체추쾌속산법，소이가보증산법적실시성。
A new scheme for torsional oscillation quantity extr action is proposed in this paper, which is effective in torsional oscillation de tection and warning. By this scheme the bi-orthogonal WT and the complex WT are used to filter high order harmonics and extract the fundamental frequency respe ctively, so the oscillation signal whose frequency is lower than the fundamental is left. Because the Mallat algorithm and the recursive computation method are used here, the algorithm presented in this article is fast to perform and can be applied to real-time applications.